Interpretation of Three-Dimensional Seismic Data, 7th Edition by Alistair R. Brown continues to be the synergy between 3-D seismic data and the workstation. The author passionately addresses the widespread problem of data under-utilization. Two new chapters and several new sections have been added in the Seventh Edition, but basic data understanding continues to be stressed.
Seismic reflections come from interfaces where the acoustic properties of the rocks change, and this fact is the basis of our understanding of the nature of seismic data. Acoustic impedance of a rock layer is the product of the density and the velocity of that layer, and strictly a reflection is generated by a contrast in acoustic impedance. In fact impedance and lithology normally follow each other, so that impedance boundaries and lithologic boundaries normally concur.
Several new sections, figures and text updates have been added to continue the value of this book into the future. But the major additions are chapters or subchapters on Inversion, Visualization, and Spectral Decomposition. Rebecca Latimer in Inversion and Interpretation of Impedance Data compares the different methods of inversion and tells us which to use in different situations.
David Roberts in Visualization and Visual Integration demonstrates some amazing insights possible with modern methods. Greg Partyka helps the interpreter understand Spectral Decomposition and shows how to get additional interpretive leverage out of a narrow frequency band.
Consider sand encased in shale, perhaps the most common situation forming a hydrocarbon reservoir. The shale-sand interface at the top generates a reflection, and the sand-shale interface at the base generates a reflection (Figure 1-1). Thus sand has a reflection from the top and another from the base. These two reflections should be considered together in all studies of the reservoir sand.
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